Patent US2033880A successfully refreshed from Google Patents.
US2033880A
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Irrigation device
Assignee: Skinner Irrigation Co Inc
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Filing: 1932-05-21
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Granted: 1936-03-10
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Expires: 1952-05-21
Abstract
No abstract record available.
Inventors
- 👤 Walter H Coles
- 👤 Bert J Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:03
CPC Classifications
A; A01; A01G; A01G25/00; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/4351; Y10T137/5327; Y10T137/5456; Y10T137/5462; Y10T137/5468; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/6137; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-03-10 | 1939-09-09 | 1940-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-10 | 1943-09-09 | 1944-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-10 | 1947-09-09 | 1948-03-10 | $7700.00 | Window Closed / Lapsed |